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PS: The Preventive Maintenance Monthly, more commonly referred to as PS Magazine, was a series of United States Army pocket-sized bulletins published between June 1951 and November 2019 as a monthly magazine with comic book-style art to illustrate proper preventive maintenance methods, as well as proper supply procedures and related safety.
The procedures associated with periodic maintenance are generally called a Periodic Maintenance System (PMS). There is risk that the system will not work as expected, and this risk grows as time passes due to increasing possibility of silent faults that cause operational failure. Periodic maintenance actions control risk of operational failure.
Operational maintenance is the care and minor maintenance of equipment using procedures that do not require detailed technical knowledge of the equipment’s or system’s function and design. This category of operational maintenance normally consists of inspecting, cleaning, servicing, preserving, lubricating, and adjusting, as required.
A process flow diagram (PFD) is a diagram commonly used in chemical and process engineering to indicate the general flow of plant processes and equipment. The PFD displays the relationship between major equipment of a plant facility and does not show minor details such as piping details and designations.
A functional flow block diagram (FFBD) is a multi-tier, time-sequenced, step-by-step flow diagram of a system's functional flow. [2] The term "functional" in this context is different from its use in functional programming or in mathematics, where pairing "functional" with "flow" would be ambiguous.
Flow Chart is a work of 4,794 lines, divided into six numbered chapters or parts, each of which is further divided into sections or verse-paragraphs, varying in number from seven to 42. The sections vary in length from one or two lines, to seven pages.
Novel infectious diseases, such as COVID-19, are a significant public health threat. [30] Although human coronaviruses (CoVs) were known as major pathogens which caused respiratory illnesses, [31] [32] a new strain of coronavirus known as SARS-CoV caused an outbreak in 29 countries from 2002 to 2004.